This adds a <loext:signatureline> element to draw:image if the image
is a signatureline.
Example:
<draw:image xlink:href="...">
<loext:signatureline loext:id="..." loext:suggested-signer-name="..." loext:suggested-signer-title="..." loext:suggested-signer-email="..." loext:signing-instructions="..." loext:show-sign-date="true" loext:can-add-comment="false"/>
</draw:image>
Change-Id: I4d77acec528175fba66556661ab74462f5bd875f
Reviewed-on: https://gerrit.libreoffice.org/45153
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>
Samuel Mehrbrodt
bfd613a462